Our Services

Are You Ready for Your Lawn to Be Beautiful?

Whether its shady, sunny, sloped, or flat, your lawn deserves a personal visit and analysis. We can improve the beauty of your lawn with our time-tested Lawn Care programs and Liquid Aeration. We can protect your lawn from pests with our Grub & Insect control. We can even keep your Small Trees and Shrubs looking good with Fall deep root feedings. Whether you live in the Crystal Lake or McHenry areas in the northwest suburbs, we have a lawn care program that is designed for your lawn.

Lawn Fertilization & Weed Control

Our lawn care programs are designed to keep your lawn free of those pesky dandelions, thistle, and other broadleaf weeds, as well as to prevent your lawn from being overrun by crabgrass. Our regular lawn care programs are applied at appropriate intervals to keep your lawn green and weed-free all season long. Each application includes balanced fertilization formulated for the specific weather and growing conditions we experience here in northeastern Illinois.

Liquid Aeration

Liquid aeration loosens topsoil and encourages deeper rooting to allow for greater oxygenation of the root zone. It improves drainage and reduces puddling on the lawn, and is especially beneficial to lawns that are growing in clay or compacted soils. There’s no messy core soil plugs and the liquid aeration covers the entire treatable lawn area, compared to traditional core aeration. There is no need to mark sprinkler heads, invisible fences, or cable lines. This aeration treatment also includes soil conditioners and a liquid dethatcher, which breaks down the current thatch releasing the nutrients back into the soil. This treatment is done in the late Summer through Fall (exact timing depends on weather/rain/temperatures).

Grub & Insect Control

Although you may not see them, in most lawns, grubs are lurking beneath the surface, chewing on the roots of your grass. If there are enough of them, and the conditions are right, grubs can destroy an entire lawn in a matter of days. That Weed Guy can provide your lawn with season-long protection from grubs and other sub-surface feeders. If you are seeing ants and other crawling insects coming into your home, you will also want to try our perimeter pest control applications.

Your satisfaction is our guarantee.

At That Weed Guy, we strive to provide you with the best lawn care service around, and we back our programs with our  Satisfaction Guarantee. If you are not fully satisfied with the results of one of our lawn care services, we will do everything possible to make it right. If we are still unable to make it right, we will refund you the full price of the application.

Get your free quote

There is absolutely no obligation. It is quick and easy. We only need your address to measure your lawn. Add in your basic contact info so we know who and how to send the quote to. Get the LOCAL, FAMILY-OWNED difference today!

We Proudly Serve the Following Areas in Illinois

Crystal Lake
Prairie Grove
Fox River Grove
Lake in the Hills

Island Lake
Oakwood Hills
Spring Grove

Holiday Hills
McCullom Lake
Bull Valley
Wonder Lake

What Our Customers Are Saying

This company is AMAZING!!! The people are great they explained everything very thoroughly! Prices are SO reasonable! I have told everyone I know about this company my yard was covered in weeds you could not even really see the grass! (I attached a picture to this site) He came and sprayed, and after just the first spray they were all gone!!! I will definitely be using this company for all my lawn care, highly recommend!!!

Bailey B.

Google Review, 5 Stars

Started using their service last year, referred by my neighbor who used them for years. Great customer service, very helpful and my lawn looks great. Thank you!

Ann A.

Google Review, 5 Stars

Awesome customer service and their treatments worked wonders on my lawn. Highly recommend that weed guy for all your lawn care needs!

Megan G.

Google Review, 5 Stars

That Weed Guy came highly recommended. Unfortunately I live outside their current service area. Despite this, the person I spoke with took time to discuss my concern and make suggestions. She was kind, helpful, and did not rush the conversation, even though I was not going to be a "paying customer". That kind of excellent customer service tells me this is a business that cares!

Mila A.

Google Review, 5 Stars